Yashyizwe kumurongo wimpera yumuyoboro wamazi, valve ya flap ifite imikorere yo gukumira amazi yo hanze. Umuriro wa flap ugizwe ahanini n'ibice bine: intebe, valve, impeta y'amazi na hinge. Imiterere igabanijwemo uruziga na kare.

. Ingamba z'amazi: Kuvoma bivuye mu mari ya Chimney Yumwimerere, nta bikoresho byo kumenagura

Tianjin Tanggu Jinbin Valve Cove, Ltd. yashinzwe mu 2004, hamwe n'umurwa mukuru wa miliyoni 113 ya YEAN, abakozi ba 156, metero kare 28 zitwikiriye ahantu hamwe n'ibiro. Numutungo wa valve ukora muri umwuga r & d, umusaruro no kugurisha, uruganda ruhuriweho guhuza siyanse, inganda nubucuruzi.

Isosiyete ifite ubu buryo bwa 3.5m